Dicumene to its structural specificity, the C-C bond between the corresponding carbon atoms is not stable during the operation, and is easily dissociated to form free radicals. The double cumyl group and its derivatives are attributed to a free radical initiator having an unstable C-C bond, and are mainly used as a flame retardant synergist and a cross-linking copolymerization catalyst. Compared with general free radical initiators such as peroxides and azo compounds, it has high stability and is safe to use.
As a flame retardant dicumene, it is used on the one hand to form a free radical to cause the halogen chain to transfer and on the other hand, when the external temperature rises, the halogen radical is promoted to achieve a flame retardant effect. The amount of addition has little effect on the tensile strength of the system. The elongation at break of the system decreases with the increase of the amount of DMDBP. It may be because the interface state of the system changes with the increase of the amount of DMDBP. The reason for the difference.
Use of dicumene
As a synergistic agent for flame retardant of polyolefin plastics, it can replace antimony trioxide in bromine-based flame retardant system, increase the flame retardant effect, and increase the physical and mechanical properties of plastics while reducing the amount of flame retardant. A graft catalyst for polystyrene and polypropylene. Used in polymer crosslinking initiators.www.china-zhufengchem.com